<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片 -->
    <el-card>
      <!-- 搜索框 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button slot="append" icon="el-icon-search" @click="getUserList">
            </el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              active-color="#13ce66"
              inactive-color="#ff4949"
              @change="userStateChange(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-s-tools"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑对话框 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!-- 内容区 -->
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
    >
      <div>
        <p>当前用户：{{ userInfo.username }}</p>
        <p>当前角色：{{ userInfo.role_name }}</p>
        <p>
          分配角色：
          <el-select v-model=" selectedRoleId " placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
    <canvas id="test">你的浏览器版本过低，请升级浏览器</canvas>
  </div>
</template>

<script>
export default {
  data() {
    /* 校验邮箱的验证规则 */
    var checkEmail = (rule, value, callback) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法邮箱'))
    }
    /* 校验手机号的验证规则 */
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法手机号'))
    }
    return {
      /* 获取用户列表的参数对象 */
      queryInfo: {
        /* 查询参数 */
        query: '',
        /* 当前的页码 */
        pagenum: 1,
        /* 每页显示条数 */
        pagesize: 2
      },
      userlist: [],
      total: 0,
      /* 控制用户添加对话框的显示与隐藏 */
      addDialogVisible: false,
      /* 添加用户的表单数据 */
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      /* 添加表单的验证规则 */
      addFormRules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 10,
            message: '用户名长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 10,
            message: '密码长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机号',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      /* 修改表单的验证规则 */
      editFormRules: {
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机号',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      /* 控制用户修改对话框的显示与隐藏 */
      editDialogVisible: false,
      /* 查询到的用户信息对象 */
      editForm: {},
      /* 控制分配角色的对话框的显示与隐藏 */
      setRoleDialogVisible: false,
      /* 需要被分配角色的用户信息 */
      userInfo: {},
      /* 从后台获取的角色列表 */
      rolesList: [],
      /* 已选中的角色 */
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    /*  获取用户列表 */
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    /* 监听pagesize改变事件 */
    handleSizeChange(newSize) {
      console.log('页面用户数量改变', newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    /* 监听页码改变事件 */
    handleCurrentChange(newpage) {
      console.log('页码改变', newpage)
      this.queryInfo.pagenum = newpage
      this.getUserList()
    },
    /* 监听状态改变 */
    async userStateChange(userinfo) {
      console.log('用户状态改变', userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('状态改变失败')
      }
      this.$message.success('状态更新成功')
    },
    /* 取消添加后，重置添加对话框 */
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    /* 取消添加后，重置修改对话框 */
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    /* 点击按钮，添加新用户 */
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        /* 发送添加请求 */
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) this.$message.error('用户添加失败')
        this.$message.success('用户添加成功')
        /* 添加对话框消失 */
        this.addDialogVisible = false
        /* 重新获取用户列表 */
        this.getUserList()
      })
    },
    /* 点击按钮，修改用户信息 */
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        /* 发送修改请求 */
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        )
        if (res.meta.status !== 200) this.$message.error('用户信息修改失败')
        this.$message.success('用户信息修改成功')
        /* 修改对话框消失 */
        this.editDialogVisible = false
        /* 重新获取用户列表 */
        this.getUserList()
      })
    },
    /* 显示编辑对话框 */
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      console.log(res)
      if (res.meta.status !== 200) {
        this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    /* 根据ID删除对应的用户信息 */
    async removeUserById(id) {
      /* 用户确认是否删除 */
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) this.$message.error('编辑用户失败')
      this.$message.success('删除成功!')
      this.getUserList()
    },
    /* 显示分配角色对话框 */
    async setRole(userInfo) {
      /* 获取需要被分配角色的用户信息 */
      this.userInfo = userInfo
      /* 在展示对话框之前获取角色所有的角色列表 */
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取失败')
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    /* 保存角色分配结果 */
    async saveRoleInfo() {
      if (!this.selectedRoleId) return this.$message.info('请选择角色')
      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      )
      if (res.meta.status !== 200) return this.$message.error('角色保存失败')
      this.$message.success('角色分配成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped></style>
